Anvil for riveting guard ledger plates



v Dec. 22, 1936. c. R. RANEY ANYIL FOR RIVETING GUARD LEDGER PLATES Filed July 5, 1955 Patented Dec. 22, 1936 PATENT OFFIE ANVIL FOR RIVET ING GUARD LEDGER PLATES Clemma R. Raney, Riverside, Ill., assignor to International Harvester Company, a corporation of New Jersey Application July 5, 1935, Serial No. 30,044

2 Claims.

The invention relates to an improved guard ledger plate riveting block or anvil employed in facilitating replacement of the ledger plates for guard fingers of cutting apparatus embodied in harvesting machinery.

Ledger plates easily become damaged in use and frequently require replacement. As these plates are securely riveted to and rigidly held in the respective guard fingers, the task of removing them becomes quite burdensome. To facilitate such removal and replacement of these ledger plates it is desirable to provide a portable fixture, or anvil block, to retain a guard while removing and replacing a ledger plate.

The main object of this invention accordingly is to provide a hand anvil block having a depression or groove therein, shaped to receive and fit the contour of a guard whereby said guard may be readily worked upon to remove and replace its worn or damaged ledger plate.

Another object is to provide the block with a pair of riveting studs arranged in spaced relation in a manner to aid in securely locating a guard finger on the block.

Still another object is to provide such a block of simple, inexpensive construction, which can readily be moved about on a work bench or other support for handy use.

These and other desirable objects are achieved by the practicable form of block shown in the accompanying drawing. Said block, as shown, preferably comprises a casting of convenient size, in the form of an anvil block having a substantially horizontal, flat top formed with a groove lengthwise thereon, said groove at one end being quite shallow. This groove abruptly drops away in a downward direction toward the other end of the block to form a discharge passage for the rivets that are driven downwardly out of the guard. A pair of vertical pins are embedded in the block, one on each side of the passage to help center the guard on the block and to serve as riveting posts, as will later appear.

In the drawing;

Figure 1 is a top plan view of the improved anvil block showing diagrammatically a guard positioned thereon;

Figure 2 is a side elevational view of the block per se;

Figure 3 is a central, longitudinal, side sectional view through the block, with a guard in place thereon, taken along the line 3-3 of Figure 2, looking in the direction of the arrows;

Figure 4 is an end elevational view of the block as shown in Figure 1, showing the rivet discharge end of the block;

Figure 5 is a vertical cross sectional view through the block, showing a guard in place thereon, and taken along the line 55 of Figure 2, looking in the direction of the arrows; and,

Figure 6 is an end elevational view of the block, showing the opposite end from that shown in Figure 4.

The block is shown at $8, the same being preferably cast and having a relatively wide, rectangular base H for stably mounting the same Wherever desired. The top surface I2 is preferably horizontal and flat and has formed centrally and longitudinally therein a depressed groove which at I3 is shallow and shaped to conform to and fairly snugly fit and receive the rounded lower edge of the point end of a guard finger generally shown at M.

This groove l 3, as shown in Figure 3, is dropped and curved abruptly downwardly at l 5 to provide a rivet discharge passage-way which runs out at the opposite end of the block, as shown in Figure 4, the same terminating in the edge of the base portion ll. Thus, it will be seen that the major portion of the lower edge of the body of the guard I4 is out of contact with the block II], as the passage I5 leaves a relatively large space therebelow.

The guard M has secured thereon by a rivet IS a ledger plate ll, said guard also including the usual oppositely extending wings l8.

The rear portion of the body of the guard contacts the side edges of the groove portion I5, as

shown in Figure 5, to support the rear end of the guard on the block Ill. The wings I8 do not contact the block, but, as shown in Figure 1, respectively abut against a pair of upstanding rivet posts [9, one of which is located on the top surface I2 at each side of the passage l5. These posts l9 are drive fitted, or cast, rigidly into the block, as desired.

When removing a ledger plate to replace it, the whole guard is preferably first removed from the cutter bar. The guard, with its ledger plate, is then laid in the block in the manner shown in Figure 1, the front under side of the same resting in the groove part l3, as shown in Figure 3, while the rear under side of the guard is wedged into the groove part or passage l5, as shown in Figure 5. The wings l8 abut the posts l9, as shown in Figures 1 and 3, but do not contact the top surface |2 of the block. A punch and hammer, not shown, are then used to drive the rivet l6 downwardly through the guard and into the passage I5, said freed rivet passing down the curved bottom of said passage, as shown in Figure 3, and dropping off the low end thereof and out of the block in a manner that will be quite obvious. With the rivet thus removed, the ledger plate I! can now be removed. A new ledger plate is then properly positioned on the guard and a new rivet is inserted, with the head of the rivet filling the countersunk opening in the plate. The guard is next moved, in inverted position with the head end of the rivet resting on one of the hardened riveting posts I9, the extended lower end of the rivet now extending upwardly where it can be hammered to complete the riveting operation. Thus, the new ledger plate is tightly fastened to the guard,

From this disclosure it can now be seen that an improved anvil block for the purposes stated has been provided, which attains the desirable objects heretofore recited.

It is the intention to cover all such changes and modifications of the example herein chosen for purposes of illustration which do not materially depart from the spirit and scope of the invention as covered by the appended claims.

What is claimed is:

1. An anvil for use in removing a rivet pin from a harvester guard assembly, said anvil comprising a block having a substantially fiat top formed with a lengthwise groove extending the length of the top, said groove at one end of the block for a relatively short portion of the length of the block being of a shallow depth to fit and receive the under side of the forward body portion of the guard, said groove being abruptly dropped to form a relatively deep groove extension of substantially V-shape in cross section to leave an open space below the heel end of the guard with the sides of the groove near the top solid block having a substantially horizontal top surface formed with a lengthwise groove adapted to support a harvester guard assemblyin substantially horizontal position, said groove having a solid bottom forming a continuous inclined track, a portion of said groove being of a depth to enable a rivet to be freed from the guard for downward falling movement, said deep portion of the groove track being inclined to cause the freed rivet gravitationally to slide down the groove under the supported guard and out of one end of the block in the direction of the lengthwise axis of the supported guard, and an upright pin carried in the block to project above the top surface and positioned at one side of the groove to be abutted by a wing of the guard when the same is in position for removing the rivet.

' CLEMMA R. RANEY. 

